Monument of the Millennium
Seven Modern Wonders of the World, 1994
One of the most recognized landmarks in the world, the Golden Gate Bridge, connects geographically isolated areas of California to the north, in Marin and Sonoma counties, with San Francisco. When the bridge opened in 1937, with a main suspension span length of 4,200 feet, it was the longest in the world. The engineering obstacles poised by the mile-wide, turbulent Golden Gate Strait led engineers to devise a bridge that required four years to build, 83,000 tons of steel, 389,000 cubic yards of concrete, and enough cable to encircle the earth three times. Previous ASCE designations for the Golden Gate Bridge include: the National Civil Engineering Landmark (1984) and Seven Wonders of the World (1955). Other significant bridges include the Verrazano-Narrows Bridge, the George Washington Bridge, the Akashi Kaikyo (Japan) and the Humber Bridge (England).
See the list of Seven Modern Wonders of the World.
The official web site for the Golden Gate Bridge, heralded as one of the top ten construction achievements of the 20th Century.
ASCE presents these links for informational purposes only, without endorsement.